1720366980 has 48 divisors (see below), whose sum is σ = 4819881024. Its totient is φ = 458492800.

The previous prime is 1720366961. The next prime is 1720366997. The reversal of 1720366980 is 896630271.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106519 + ... + 121601.

It is an arithmetic number, because the mean of its divisors is an integer number (100414188).

Almost surely, 2^1720366980 is an apocalyptic number.

1720366980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1720366980 is an abundant number, since it is smaller than the sum of its proper divisors (3099514044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1720366980 is a wasteful number, since it uses less digits than its factorization.

1720366980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16996 (or 16994 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 1720366980 is about 41477.3068074580. The cubic root of 1720366980 is about 1198.2304891977.

The spelling of 1720366980 in words is "one billion, seven hundred twenty million, three hundred sixty-six thousand, nine hundred eighty".